I have lots of experience with Cooper's Hawks and Great-horned Owls. Lots with videos and I did little experiments to see what their limits are packing carcasses away and pattern of return to consume a kill. I have also had Red-tailed Hawks (not very often), Ferruginous Hawk (one time during harsh winter), Sharp-shinned Hawks (going after quail sized chicks in pen without hen), Barred Owl (going after juveniles only on moonless nights when Great-horned Owls not also coming in), Short-eared Owl coming into garage after chicks in brooder during an eruption / explosion of population size (dog caught that one, Red-shouldered Hawks (cause no problems), Merlin (caused no problems as seemed more interested in songbirds), and American Kestrels that hunt mice and sparrows around barn. Even with all that I very seldom have all birds penned up. About half a dozen currently roosting in trees scattered around yard. Farm more birds in pens. I have racked up experience by keeping birds for many years and being observant and when need be willing to sleep under stars during winter to see what was going on.